Upper Yakima HUC8 17030001
A 5,540 km² sub-basin of the Pacific Northwest region in WA. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
70
Moderate
Drought index
200
Severe
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 1 reporting
Median flow
87%
p30 of record
Water assets
5,721
136 springs · 2,523 wells
USGS gauges (1)
- YAKIMA RIVER AT UMTANUM, WA124845001,970 cfsp30 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 200 | 0 | 0/1 | p30 |
Top water assets
- 69Spade Creekriver
- 69DeRoux Creekriver
- 69South Fork Manastash Creekriver
- 69DeRoux Creekriver
- 69Fortune Creekriver
- 69Fortune Creekriver
- 69Howard Creekriver
- 69South Fork Manastash Creekriver
- 69Spade Creekriver
- 69Naneum Creekriver